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<title>算法提高 Quadratic Equation</title>
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 <p><span style="font-family: 宋体; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri"> </span></p>
<p style="margin: 0cm 0cm 0pt" class="MsoNormal"><span lang="EN-US"><o:p><font size="3" face="Calibri"><strong>&nbsp;</strong></font></o:p></span></p>
<p style="margin: 0cm 0cm 0pt" class="MsoNormal"><strong><font size="3"><span style="font-family: 宋体; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri">问题描述</span><span lang="EN-US"><o:p></o:p></span></font></strong></p>
<p style="text-indent: 21pt; margin: 0cm 0cm 0pt; mso-char-indent-count: 2.0" class="MsoNormal"><font size="3"><span style="font-family: 宋体; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri">求解方程</span><font face="Calibri"><span lang="EN-US">ax</span><sup><span style="mso-bidi-font-size: 10.5pt" lang="EN-US">2</span></sup><span lang="EN-US">+bx+c=0</span></font><span style="font-family: 宋体; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri">的根。要求</span><span lang="EN-US"><font face="Calibri">a, b, c</font></span><span style="font-family: 宋体; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri">由用户输入，并且可以为任意实数。</span><span lang="EN-US"><o:p></o:p></span></font></p>
<p style="text-indent: 21pt; margin: 0cm 0cm 0pt" class="MsoNormal"><font size="3"><span style="font-family: 宋体; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri">输入格式：输入只有一行，包括三个系数，之间用空格格开。</span><span lang="EN-US"><o:p></o:p></span></font></p>
<p style="text-indent: 21pt; margin: 0cm 0cm 0pt" class="MsoNormal"><font size="3"><span style="font-family: 宋体; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri">输出格式：输出只有一行，包括两个根，大根在前，小根在后，无需考虑特殊情况，保留小数点后两位。</span><span lang="EN-US"><o:p></o:p></span></font></p>
<p style="margin: 0cm 0cm 0pt" class="MsoNormal"><strong><font size="3"><span style="font-family: 宋体; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri">输入输出样例</span><span lang="EN-US"><o:p></o:p></span></font></strong></p>
<p style="text-indent: 21pt; margin: 0cm 0cm 0pt; mso-char-indent-count: 2.0" class="MsoNormal"><font size="3"><span style="font-family: 宋体; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri">输入样例：</span><span lang="EN-US"><o:p></o:p></span></font></p>
<p style="text-indent: 21pt; margin: 0cm 0cm 0pt; mso-char-indent-count: 2.0" class="MsoNormal"><span style="font-family: &quot;Courier New&quot;" lang="EN-US"><font size="3">2.5 7.5 1.0<o:p></o:p></font></span></p>
<p style="text-indent: 21pt; margin: 0cm 0cm 0pt" class="MsoNormal"><font size="3"><span style="font-family: 宋体; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri">输出样例：</span><span lang="EN-US"><o:p></o:p></span></font></p>
<p style="text-indent: 21pt; margin: 0cm 0cm 0pt; mso-char-indent-count: 2.0" class="MsoNormal"><span style="font-family: &quot;Courier New&quot;" lang="EN-US"><font size="3">-0.14 -2.86<o:p></o:p></font></span></p>
<p style="margin: 0cm 0cm 0pt" class="MsoNormal"><span lang="EN-US"><o:p><font size="3" face="Calibri">&nbsp;</font></o:p></span></p>
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